语法与词汇
This union, _____ the 1990’s, provides financial assistance to support laid-off workers.
A、
when it was founded
B、
was founded
C、
which was founded in
D、
was founded in
【正确答案】
C
【答案解析】
句意：这个联合会于二十世纪九十年代成立，为下岗工人提供经济援助。which引导非限定性定语从句。
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